oj.uz

Submission #720758

# Submission time Handle Problem Language Result Execution time Memory
720758 2023-04-09T09:43:42 Z n0sk1ll Village (BOI20_village) C++17
50 / 100
 224 ms 26720 KB 
#include <bits/stdc++.h>

#define FAST ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);cerr.tie(0)
#define mp make_pair
#define xx first
#define yy second
#define pb push_back
#define pf push_front
#define popb pop_back
#define popf pop_front
#define all(x) x.begin(),x.end()
#define ff(i,a,b) for (int i = a; i < b; i++)
#define fff(i,a,b) for (int i = a; i <= b; i++)
#define bff(i,a,b) for (int i = b-1; i >= a; i--)
#define bfff(i,a,b) for (int i = b; i >= a; i--)

using namespace std;
long double typedef ld;
unsigned int typedef ui;
long long int typedef li;
pair<int,int> typedef pii;
pair<li,li> typedef pli;
pair<ld,ld> typedef pld;
vector<vector<int>> typedef graph;
unsigned long long int typedef ull;
//const int mod = 998244353;
const int mod = 1000000007;







//Note to self: Check for overflow

graph g(100005);
int tin[100005],tout[100005];
int dub[100005],up[20][100005],siz[100005];
int VREME=0;

void dfs(int p, int q)
{
    tin[p]=++VREME,dub[p]=dub[q]+1,up[0][p]=q,siz[p]=1;
    for (auto it : g[p]) if (it!=q) dfs(it,p),siz[p]+=siz[it];
    tout[p]=VREME;
}

void build(int n)
{
    ff(k,1,20) fff(i,1,n) up[k][i]=up[k-1][up[k-1][i]];
}

bool anc(int a, int b)
{
    if (a==0) return true; if (b==0) return false;
    return tin[a]<=tin[b] && tout[a]>=tout[b];
}

int Lca(int a, int b)
{
    bff(k,0,20) if (!anc(up[k][a],b)) a=up[k][a];
    if (!anc(a,b)) a=up[0][a]; return a;
}

int dist(int a, int b)
{
    return dub[a]+dub[b]-2*dub[Lca(a,b)];
}

int find_centroid(int p, int q, int n)
{
    int c=p;
    for (auto it : g[p]) if (it!=q)
    {
        int tc=find_centroid(it,p,n);
        if (tc!=-1) return tc;
        if (2*siz[it]>n) c=-1;
    }
    if (2*(n-siz[p])>n) c=-1;
    return c;
}

void poseti(int p, int q, vector<int> &dodaj)
{
    dodaj.pb(p);
    for (auto it : g[p])
        if (it!=q) poseti(it,p, dodaj);
}

///ans arrays
int vel[100005];
int mal[100005];

int main()
{
    FAST;

    int n; cin>>n;
    ff(i,1,n)
    {
        int u,v; cin>>u>>v;
        g[u].pb(v),g[v].pb(u);
    }

    dfs(1,0),tout[1]=VREME,build(n);
    int c=find_centroid(1,0,n);

    ///veliki

    vector<int> cor,big;
    for (auto it : g[c])
    {
        if (2*max(siz[it],n-siz[it])<n) poseti(it,c,cor);
        else poseti(it,c,big);
    }
    vector<int> border;
    border.pb(c);
    for (auto it : cor) border.pb(it);
    for (auto it : big) border.pb(it);
    ff(i,0,n) vel[border[i]]=border[(i+n/2)%n];

    ///mali

    fff(i,1,n) mal[i]=i+1;
    mal[n]=1;

    ///answer

    li malans=0,velans=0;
    fff(i,1,n) malans+=dist(i,mal[i]);
    fff(i,1,n) velans+=dist(i,vel[i]);

    cout<<malans<<" "<<velans<<"\n";
    fff(i,1,n) cout<<mal[i]<<" "; cout<<"\n";
    fff(i,1,n) cout<<vel[i]<<" "; cout<<"\n";
}

//Note to self: Check for overflow

Compilation message

Village.cpp: In function 'bool anc(int, int)':
Village.cpp:56:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   56 |     if (a==0) return true; if (b==0) return false;
      |     ^~
Village.cpp:56:28: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   56 |     if (a==0) return true; if (b==0) return false;
      |                            ^~
Village.cpp: In function 'int Lca(int, int)':
Village.cpp:63:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   63 |     if (!anc(a,b)) a=up[0][a]; return a;
      |     ^~
Village.cpp:63:32: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   63 |     if (!anc(a,b)) a=up[0][a]; return a;
      |                                ^~~~~~
Village.cpp: In function 'int main()':
Village.cpp:13:20: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   13 | #define fff(i,a,b) for (int i = a; i <= b; i++)
      |                    ^~~
Village.cpp:135:5: note: in expansion of macro 'fff'
  135 |     fff(i,1,n) cout<<mal[i]<<" "; cout<<"\n";
      |     ^~~
Village.cpp:135:35: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  135 |     fff(i,1,n) cout<<mal[i]<<" "; cout<<"\n";
      |                                   ^~~~
Village.cpp:13:20: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   13 | #define fff(i,a,b) for (int i = a; i <= b; i++)
      |                    ^~~
Village.cpp:136:5: note: in expansion of macro 'fff'
  136 |     fff(i,1,n) cout<<vel[i]<<" "; cout<<"\n";
      |     ^~~
Village.cpp:136:35: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  136 |     fff(i,1,n) cout<<vel[i]<<" "; cout<<"\n";
      |                                   ^~~~

Subtask #1
6.0 / 12.0

# Verdict Execution time Memory Grader output
1 Partially correct 2 ms 2772 KB Partially correct
2 Partially correct 1 ms 2772 KB Partially correct
3 Correct 2 ms 2772 KB Output is correct
4 Partially correct 2 ms 2768 KB Partially correct
5 Partially correct 2 ms 2688 KB Partially correct
6 Partially correct 2 ms 2684 KB Partially correct
7 Correct 2 ms 2772 KB Output is correct
8 Partially correct 2 ms 2772 KB Partially correct
9 Partially correct 2 ms 2772 KB Partially correct
10 Partially correct 2 ms 2772 KB Partially correct
11 Partially correct 2 ms 2688 KB Partially correct
12 Partially correct 2 ms 2772 KB Partially correct
13 Partially correct 2 ms 2772 KB Partially correct
14 Correct 2 ms 2772 KB Output is correct
15 Partially correct 2 ms 2772 KB Partially correct
16 Partially correct 2 ms 2772 KB Partially correct
17 Partially correct 1 ms 2772 KB Partially correct

Subtask #2
19.0 / 38.0

# Verdict Execution time Memory Grader output
1 Partially correct 2 ms 2772 KB Partially correct
2 Partially correct 2 ms 2772 KB Partially correct
3 Partially correct 2 ms 2812 KB Partially correct
4 Partially correct 2 ms 2900 KB Partially correct
5 Partially correct 2 ms 2900 KB Partially correct
6 Partially correct 2 ms 2952 KB Partially correct
7 Partially correct 3 ms 3028 KB Partially correct
8 Partially correct 2 ms 2948 KB Partially correct
9 Partially correct 2 ms 2900 KB Partially correct
10 Partially correct 2 ms 2900 KB Partially correct
11 Partially correct 2 ms 2900 KB Partially correct
12 Correct 2 ms 2900 KB Output is correct
13 Partially correct 2 ms 2900 KB Partially correct
14 Partially correct 2 ms 2900 KB Partially correct
15 Partially correct 2 ms 2900 KB Partially correct
16 Partially correct 2 ms 2948 KB Partially correct
17 Partially correct 2 ms 2900 KB Partially correct
18 Partially correct 2 ms 2944 KB Partially correct
19 Partially correct 2 ms 2900 KB Partially correct
20 Partially correct 2 ms 2900 KB Partially correct
21 Partially correct 2 ms 2900 KB Partially correct
22 Partially correct 2 ms 2900 KB Partially correct
23 Partially correct 3 ms 2900 KB Partially correct
24 Partially correct 2 ms 2900 KB Partially correct
25 Partially correct 2 ms 2812 KB Partially correct
26 Partially correct 2 ms 2944 KB Partially correct
27 Partially correct 2 ms 2772 KB Partially correct
28 Partially correct 2 ms 2948 KB Partially correct
29 Partially correct 3 ms 2900 KB Partially correct
30 Partially correct 2 ms 2948 KB Partially correct

Subtask #3
25.0 / 50.0

# Verdict Execution time Memory Grader output
1 Partially correct 2 ms 2772 KB Partially correct
2 Partially correct 1 ms 2772 KB Partially correct
3 Correct 2 ms 2772 KB Output is correct
4 Partially correct 2 ms 2768 KB Partially correct
5 Partially correct 2 ms 2688 KB Partially correct
6 Partially correct 2 ms 2684 KB Partially correct
7 Correct 2 ms 2772 KB Output is correct
8 Partially correct 2 ms 2772 KB Partially correct
9 Partially correct 2 ms 2772 KB Partially correct
10 Partially correct 2 ms 2772 KB Partially correct
11 Partially correct 2 ms 2688 KB Partially correct
12 Partially correct 2 ms 2772 KB Partially correct
13 Partially correct 2 ms 2772 KB Partially correct
14 Correct 2 ms 2772 KB Output is correct
15 Partially correct 2 ms 2772 KB Partially correct
16 Partially correct 2 ms 2772 KB Partially correct
17 Partially correct 1 ms 2772 KB Partially correct
18 Partially correct 2 ms 2772 KB Partially correct
19 Partially correct 2 ms 2772 KB Partially correct
20 Partially correct 2 ms 2812 KB Partially correct
21 Partially correct 2 ms 2900 KB Partially correct
22 Partially correct 2 ms 2900 KB Partially correct
23 Partially correct 2 ms 2952 KB Partially correct
24 Partially correct 3 ms 3028 KB Partially correct
25 Partially correct 2 ms 2948 KB Partially correct
26 Partially correct 2 ms 2900 KB Partially correct
27 Partially correct 2 ms 2900 KB Partially correct
28 Partially correct 2 ms 2900 KB Partially correct
29 Correct 2 ms 2900 KB Output is correct
30 Partially correct 2 ms 2900 KB Partially correct
31 Partially correct 2 ms 2900 KB Partially correct
32 Partially correct 2 ms 2900 KB Partially correct
33 Partially correct 2 ms 2948 KB Partially correct
34 Partially correct 2 ms 2900 KB Partially correct
35 Partially correct 2 ms 2944 KB Partially correct
36 Partially correct 2 ms 2900 KB Partially correct
37 Partially correct 2 ms 2900 KB Partially correct
38 Partially correct 2 ms 2900 KB Partially correct
39 Partially correct 2 ms 2900 KB Partially correct
40 Partially correct 3 ms 2900 KB Partially correct
41 Partially correct 2 ms 2900 KB Partially correct
42 Partially correct 2 ms 2812 KB Partially correct
43 Partially correct 2 ms 2944 KB Partially correct
44 Partially correct 2 ms 2772 KB Partially correct
45 Partially correct 2 ms 2948 KB Partially correct
46 Partially correct 3 ms 2900 KB Partially correct
47 Partially correct 2 ms 2948 KB Partially correct
48 Partially correct 72 ms 17912 KB Partially correct
49 Partially correct 84 ms 19280 KB Partially correct
50 Partially correct 92 ms 19288 KB Partially correct
51 Partially correct 65 ms 15752 KB Partially correct
52 Partially correct 80 ms 19228 KB Partially correct
53 Partially correct 84 ms 17596 KB Partially correct
54 Partially correct 71 ms 14660 KB Partially correct
55 Partially correct 224 ms 26720 KB Partially correct
56 Partially correct 194 ms 22720 KB Partially correct
57 Partially correct 164 ms 21496 KB Partially correct
58 Partially correct 189 ms 20452 KB Partially correct
59 Partially correct 108 ms 19504 KB Partially correct
60 Correct 61 ms 19424 KB Output is correct
61 Partially correct 66 ms 19648 KB Partially correct
62 Partially correct 83 ms 19700 KB Partially correct
63 Partially correct 67 ms 18776 KB Partially correct
64 Partially correct 79 ms 19656 KB Partially correct
65 Partially correct 83 ms 19752 KB Partially correct
66 Partially correct 63 ms 18760 KB Partially correct
67 Partially correct 48 ms 15372 KB Partially correct
68 Partially correct 68 ms 17180 KB Partially correct
69 Partially correct 72 ms 19780 KB Partially correct
70 Partially correct 98 ms 18776 KB Partially correct
71 Partially correct 47 ms 14720 KB Partially correct
72 Partially correct 53 ms 16320 KB Partially correct
73 Partially correct 78 ms 19712 KB Partially correct
74 Partially correct 67 ms 18588 KB Partially correct
75 Partially correct 104 ms 19148 KB Partially correct
76 Partially correct 75 ms 19180 KB Partially correct
77 Partially correct 74 ms 18860 KB Partially correct
78 Partially correct 48 ms 13976 KB Partially correct
79 Partially correct 81 ms 15732 KB Partially correct
80 Partially correct 126 ms 19136 KB Partially correct
81 Partially correct 70 ms 19028 KB Partially correct
82 Partially correct 80 ms 19560 KB Partially correct